Research featured in Harvard Mental Health Letter and published in The American Journal of Psychiatry looked at the damage that hostile words, and or yelling can have on a child.

They found “words are weapons that can cause lasting wounds, especially when wielded by parents against children. The damage is sometimes more serious and lasting than injuries that result from beatings”, say Harvard researchers reporting on a survey of young adults.

I've been a professional copywriter for over 35 years. I also had epilepsy for decades.
My mission is advocacy; to increase education, awareness and funding for epilepsy research.
Together, we can make a huge difference. If not changing the world, at least helping each other, with wisdom, compassion and sharing.